Hot-blast stove



G. E. STEUDEL HOT BLAST swovn Filed July 21. 1924 s Sheets-Sheet 1 I q/hvenfir 501272636. Georg k Gfeudel Dec. 15 1925. 1,565,971

G. E. STEUDEL HOT BLAST s'rovE Filed Juiy 21 1924 6 SheefcS Sheet s 4 r r F r l J l ng.

Dec. 15, 1925' G- E. STEUDEL HOT BLAST STOVE Filed July 21, 24 6 Sheets-Sheet 4 G. 1-:v STEUDEL now BLAST STOVE Dec.

6 Sheets-Sheet 5 Filed July 21, 1924 e J7 w M afi Dec. 15, 1925.- 1,565,971

(5. E. STEUDEL HOT BLAST STOVE Filed July 21, 1 24 6 Sheets-Sheet 5 I l F P39 J f 3 H g Geor'cg l? 2263x221 P atented Dec. 15, 1925.

UNITED STATES PATENT OFFICE.

' GEORGE E. STEUDEL, OF MILWAUKEE, WISCO.N:-n.

HOT-BLAST STOVE.

Application filed July 21, 1924. Serial No. 727,203.

' the provision of checker work placed in-the stove in such manner that the vertical lines or channels extending through the checker work have communicating passages with each other so thatthe heated gases and products of combustion passing through the chamber in one direction can spread out over the entire cross-sectional area and the air blast passing in the opposite direction also can pass from one flue to another, and spread out over the entire cross sectional area of the regenerative chamber.

Heretofore it has been common practice in arranging the bricks forming the checker work to place them in courses in edge to edge and end to side relation with each other, this arrangement extending from the bottom to the top of the regenerative chamber thereby forming passages or lines which are substantially square in cross section, the said flues or passages being continuous from the top to the-bottom of the regenerative chamber. In this form of construction the gas or air flowing through the long flue will flow faster in the center than along the sides, especially where the bricks making up the sides of the channel are'rough, so that the gas which passes through the channels gives up its heat to the bricks with which it comesincontact and in turn the slow moving gas adjacent the bricks acts as an insulator and prevents the gas in the center of the flue from giving off its heat to the bricks. In other words, the gas channels as it passes through the checker work. In' my improved method of forming the flues through the regenerative chambers I provide courses having bricks of one-half the usual height placed in a plurality of courses and in regular positions in each horizontal course, the total number being eight courses so as to cover the entire cross-sectional area of the horizontal chamber so that communicating passages are formed in the checker work at regular belt-s which will allow the gas to pass from one fine to another or spread throughout the entire cross-sectional area of the regenerative chamber as the gas passes through one of these belts. The courses of brick are so positioned. that there is no material lessening of the strength of the checker work construction so that there is no danger of the checker work collapsing and filling up the fines and in this manner I am able to cause a. flow of gas to be distorted as it flows through the regenerative chamber and thereby allowing the brick work to absorb the heat from the burned gases and products of combustion more quickly than it otherwise would do, and also allowing the air, when the hot blast stove is on blast, to absorb heat more quickly from the checker work, thereby resulting in a stove of higher efiiciency than what has been common heretofore.

Another and further object of my invention is the provision of a plurality of courses of brick-making up the checker Work of half bricks, so that there is a regular belt throughout the checker work in the regenerative chamber through which the gases and air can spread from one flue to another as ,the gases pass through the regenerative chamber, and thus effectually prevent the channeling of the-gas through the center of the fines.

These and other objects of. my invention will be more fully and better understood by reference to the accompanying drawings. and in whichs Figure 1 is a vertical sectional through a hot blast stove; t

Figure 2 is a transverse sectional View the first course of brick making up one the belts of my improved construction;

Figure 3 is a transverse sectional view lines 33 of Figure 2;

Figure 4 is a transverse sectional view of the second. course used in my improved construction Figure 5 is a vertical sectional view on lines 5-5 of Figure 4;

Figure 6 is a artial transversesectional view of course 0. 3 of my improved construction.

Figure 7 is a partial transverse sectional view of the fourth course of my improved construction.

Figure 8 is a partial view of of the fifth course of bricks making up the checker work;

Figure 9 is a sectional view showing the sixth course of bricks;

Figure 10 is a sectional view of the serenth course;

Figure 11 is a view of the eighth course of bricks ,making up the checker work; and

bignre 12 is a vertical sectional view showing a belt of the courses heretofore illustrated extending across the entire re generative chamber.

Referring no w specifically to the drawing, a hot blast stove shell 10 is shown, having openings 11 and 12 therein through which gas and air flow into and out of the hot blast stove, and having the usual brick lining 13 with a vertical wall 1&- placed therein adjacent a passage 15, with the usual brick or checker work in the regenerative chamber of the stove. In the preferred form 1 show two belts 16 and 17 in the regenerative cham ber, having bricks of half. the usual height placed in spaced relation with each other and in a plurality of horizontal courses throughout the belt, preferably eight in mun" ber, although any number can be used, so that in each bolt. the air or gas can spread out into substantially all oi the fines and throughout the entire cross sectional area of the regenerative chamber.

Referring now to Figures 2 and 3 and in which the first course of one of the belts is illustrated, it will be noted that this course comprises a plurality of rows of brick 18, 18 in spaced parallel relation with each other, and extending in a direction toward the passage of the stove 10, and a plural ity of rows of brick 19, 19 in spahed relation with each other extending transversely across the stove 10 at right angles to the rows 18, 18, the bricks making up these rows being of the usual size and placed in registered edge to edge vertical reiatwn with each other, the bricks making up each of these rows being placed inend to side horizonta'l relation with each other, so that the fines 20, 20 are formed which are substantially square in cross sectional shape, and which extend vertically through the regenerative chamber of the stove 10. Each alternate row 18has a. plurality of bricks 21, 21 laid therein one-half the height of the other bricks used in making up this course, these half bricks being placed in alternate relation with full size bricks in the row 18, so that. whcn'the checker work is completed, each flue 2,) adjacent the. half bricks has a comn'iunicating pZtSSflQO or port formed in the checke work, so that gas and air can pass from are fine to another over the tops ot the hai. bllUKS. It will be understood that in laying thcsc courses the vertical joints between the bricks are broken, that is, the courses are so placed that the vertical joints betweenthe bricks are out of align ment with each other so that the Whole checker work is more securely held together against side slipping. proportionate size are placed around the marginal edge of each course to insure the proper filling of the regenerative chamber, all of which is common practice in the building of this checker WOIlL;

The second course of bricks (see Figures +1 and 5) is laid similarly to the first course and comprises a plurality of rows 22, 22, extending parallel to the row 18 of the first course. and in registered relation therewith, and a. plurality of other rows 23, 23 which extend parallel to and in vertical registered relation with the rows 19, 19 in the first course, with half bricks 24, 2 1'placcd in the rows 22 in spaced alternate relation with the full height bricks, the rows 22, 22 in which the half bricks are used in this course being in vertical ofiset relation with the Filler blocks of rows 18, 18 in the first course in which the half bricks are used.

Referring now to Figure 6 in which the third course of bricks is illustrated, a plurality ot rows of bricks 25, 25 are shown with rows 26, 26 extending in the opposite direction and having half bricks 27-, 27 placed therein, these half bricks being in the same relative position as the half bricks in the courses heretofore described With relation to each other and are placed in the rows which are in vertical alignment with the rows of brick in which the half bricks 21 are placed in the first course. but are in offset spaced relation with these bricks being above the full bricks set in the rows 18, 13 in the first course.

Referring now to Figure 7 in which the fourth course is illustrated, a. plurality of rows of bricks 28, 28 are shown which extend parallel to the rows 2:), 25 in the first course with other rows 29 extending at right angles thereto, anthhaving halt bricks 30, 30 positioned therein, the rows 29 in this course being in vertical alignment with the rows 22 in the second course, and the half bricks being above the full size bricks used ire this course and in ofi'set relation with th@ half sized bricks iii the rows 22, 22 in the the same as in the other courses with the ex-- ception that the half bricks are used in the transversely extending, rows 32, 32.

Referring to Figure 9 in which the sixth roursc is illustrated, a plurality of transversely extending rows 34, 34 are used and a plurality of other rows 35, 35," extending at right angles thereto each of said rows being in vertical alignment with the lower rows with half bricks 36, 36 positioned in spaced relation with each other in each alter nate row 34, 34;, these half bricks being positioned. in vertical alignment'with the rows 32, 32, in the fifth course and in offset relation with the rows in which the half bricks are used in the fifth course.

In Figure 10 is illustrated the seventh course in which transversely extending rows of brick 37, 37 are shown with other rows 38, 38 extending at right angles'thcreto, and half bricks 39 being placed in spaced relation in the course in vertical alignment withthe rows 32 in which the half bricks in the fifth course and directly above the full size bricks used in the rows 32 in the fifth course.

Referring now to Figure 11 in which the eighthcourse is illustrated, a plurality of rows 40-40 of brick is shown, having transversely extending rows 41 with half bricks 4-2 positioned in spaced relation with each other in this course, these half bricks being in thetsame vertical alignment as the rows -34! in which the half bricks making up the sixth course are used, but being in ofiset relation with said half bricks and immediately above the full height bricks used in this course. a

e checker work above the eighth course is b ilt up in precisely the same manner with full si ed brie s in end to side relation withyeach other until the first course of the belt 17 is reached whereupon the same order at a rangement followed as that heretoto described for the belt 16. Above this belt 17 the checker work is continued in the usual manner to the top of the regenerative chamberf number and arrangement of the courses may be varied from what is SlWl'l.Eild described, and it may be found desirablei'n smaller stoves touse only three or four courses to each belt, and more than two be'lts may be used in each regenerative chamber if desired.

It will thusibe understood that I provide communicating ports through the checker chamber in which all of the vertical fines are connected, exce t a few fluesaround the outer peri buy. 0 the checker work and throug w iclj very little air and gas flow during the operation ofthe hot blast stove.

In the operation of the stove, the gas or air enters at the bottom of the stove and flows upward or downward throu h the checker work, depending upon whether gas or air is flowin throu h the stove and through the chec er wor until it reaches one or the other of the belts 16 or 17 whereuponthe. gas spreads out over the tops of the half bricks and any tendency to channel the gas is broken up so that I am able to secure a much more e'flicient and effective operation of thehot blast stove than what has been possible heretofore.

lVhile I have described more or less precisely the details of construction, I do not wish to be understood as limiting myself thereto, as I contemplate changes in form and the )roportion of parts and the substitution 0t equivalents circumstances may suggest or render expedient without departing from the spirit or scope of my invention.

I claim: a

1. Checker work for hot blast stoves, comprising in combination horizontal courses of brick extending at right anglesto each other and. in vertical alignment with each other, whereby flues are formed through said checker work, the said checker work having bricks of unequal height placed therein, whereby Vcommunicating passages are formed between the said lines in said checker work. 1

2. Checker work for hot blast stoves, comprising in combination courses of brick,

placed in horizontal courses andextending at .right angles to each other and having bricks of one-half the height of the bricks making up the courses placed in predetermined position in said courses, whereby communicating passages are formed with the vertical fines and extending through the said checker work.

3. Checker work for hot blast stoves, comprising in combination of bricks laid in v orizontal courses in said hot blast stove,

each course comprising parallelrows placed at right angles to each other whereby fines are to be formed in said stove and a plurality of belts of checker work, having bricks of unequal height in said belt, whereby gas may pass from one flue to another in said belt.

4. Checker work for regenerative chambers of hot blast stoves, comprising in combination a plurality of horizontal courses of brick, in vertical registered relation with each other each course comprising plurality of rows of brick and. extending at right angles to each other, and half bricks placed in one of said rows, whereby gas may pass from one flue to another in said checker work. a r

5. Checker work for regenerative cham+ bers comprising horizontal courses, each course having a plurality'of rows of brickinspaced arallel relation with each other extending 1n one direction and a plurality of rows of brick in spaced arallel relation with each other and at rig it angles to the said first mentioned rows, whereby lines are formed in said checker work, a part of said bricks in the said rows being of one-half height of the bricks used in. the other courses course having a plurality of rows of brick in spaced parallel relation with each other extending 1n one direction and a plurality of rows of brick in spaced parallel relation with each other and at right angles to '0 the said first mentioned rows, whereby fines are formed in saidchcclrer work, a port of said bricks in the said rows being of onehalf height of the bricks used in the other courses whereby communicating ports are formed in the walls of the said fines, the J bricks in said courses being placed in end to side relation with each other.

Signed at Milwaukee, Wisconsin, this 11th day of July, 1924.

E. STEUDEL. 

